anyone having any problems with the custom dc??? I just tried and it said the address was not valid I pm'd the person I am sending it to and she verified that it was correct.

From the help center:

I am getting the message "electronic postage cannot be used for this address".  What does this mean?

• This message "electronic postage is currently not available for this address" is an error message from endicia.com, our online postage provider, and often it just goes away if the sender tries again to print after a few minutes.  

• If the address is not validated by USPS,  you will also see the above message.  In the case of an invalid address, the requestor can go to this site  to try to find the "validated" form of his or her address.  Printed postage can't be used to send a package to an address that has not been validated by USPS.

Doesn't apply to custom DC

You can always try Paypal postage. It includes a DC number for 19¢.

but you will not receive quick credit when using any other DC service other than PBS.  You will need to wait until the requestor marks the book received and if it lost you will not receive a credit.

ETA to add Help Doc Info:

Can I get Quick/Guaranteed credit if I buy Delivery Confirmation elsewhere (not through PBS)?

No. Unless your Delivery Confirmation was purchased through the PaperBackSwap system, your books will not be tracked on the map nor will they be awarded QuickCredit or CreditAssurance.

• Making the system work that way would require additional programming that we have not written
• The fee for PBS Delivery Confirmation offsets the financial loss we sustain whenever we have to 'invent' credits to give to both sender and requestor when a book is declared lost in the mail (we have to put money into escrow for every credit that is not backed by an actual book, to satisfy our lawyers, accountants, and Uncle Sam).

If you purchase your Delivery Confirmation outside of the PaperBackSwap system, you may have paid more (80 cents at the PO), or less (18 cents for the DC alone), but you have not paid the slight upcharge for the Quick/Guaranteed Credit and tracking services. Delivery Confirmation can be purchased for $0.19 several places on the Internet.  What PBS provides, which justifies the additional $0.27 fee, is the service of mapping your books across the country, receiving 'quick credit', and being indemnified against possible misdelivery or loss of your book.

used pay pal,  I wonder what is going on with the custom dc????

Custom DC can be very picky about addresses. It doesn't like symbols so c/o lines can mess it up. I often go to USPS.com to type in the address and it converts it to the accepted format.

Sorry- didn't see custom DC you wouldn't received quick credit anyway. 

The PO sometimes has the address setup differently than what you were given.  Such as they are using Condo. the USPS is using Apt or if you put in #, / -   type characters it is rejected.  The best thing to do is go to the the USPS site that is in Chris's post and type the address you have.  It will return the address that is accepted. 

Also, recently someone posted that their PO didn't have their address in their system and so it wasn't recognized as a valid address electronically though they received mail.